JP4520389B2 - Television broadcast system, special reproduction detection method thereof, transmission station apparatus thereof, broadcast signal reproduction apparatus - Google Patents

Description

  The present invention relates to a television broadcast system that generates stream data obtained by multiplexing data broadcasting data on video / audio data of a television broadcast program and broadcasts the broadcast data as a broadcast signal. The present invention relates to a countermeasure technique in the case of having a special reproduction function such as recording and viewing while skipping a specific part.

  In television broadcasting, sponsor advertisement (CM) content is basically played before, during and after a program to realize free broadcasting. However, in recent years, due to the development of digital information processing technology, the received broadcast signal itself is digitally recorded, and the problem of skipping CM (hereinafter referred to as CM skip) by special playback such as skip or double speed playback is serious. It has become. For example, hard disk recorders that have been widely used recently have a function of skipping a certain period of time by a user operation when playing a recorded broadcast signal. By using this, it is very easy to skip a CM. Is possible.

  Even if such a CM skip is performed on the receiving side, no measures are taken on the broadcasting station side. However, if CM playback is skipped, it will be difficult for sponsors to attach to television broadcast programs, and the current free broadcast system will not be established. For this reason, it is strongly desired that even when the CM reproduction is skipped by special reproduction such as skip or double-speed reproduction on the receiving side, this can be detected and fixed CM compensation can be performed.

A technique for pointing out the above problem and performing a substitute advertisement when an advertisement is skipped is described in Patent Document 1. However, the technique shown in this document detects advertisement skipping, and gives the receiver itself the function of presenting a substitute advertisement when a certain condition is not met. It is a prerequisite. It is expected that mounting such a function on all receivers places a great burden on the receiver manufacturer and is difficult to implement.
Japanese Patent No. 3390383 Published by The Radio Industry Association “Data Broadcast Coding and Transmission Methods for Digital Broadcasting” Standard ARIB STD-B24

  As described above, in a television broadcasting system, it is strongly desired that processing requested by a sending side can be executed when special reproduction of specific content is performed.

  The present invention was made in order to solve the above-mentioned problem, and it is possible to execute detection of special reproduction from the broadcast transmission side to the reception device side without newly adding a function to the reception side, Furthermore, it is intended to provide a television broadcasting system, a special reproduction detection method thereof, a transmission station apparatus, and a broadcast signal reproduction apparatus capable of executing processing requested by a sender when special reproduction of specific content is performed. Objective.

  In order to achieve the above object, a television broadcasting system according to the present invention generates data stream data by multiplexing data broadcasting data and time data on video / audio data of a television broadcast program, and transmits it as a broadcast signal. The broadcast signal is provided in the broadcast signal transmission side device, and the broadcast signal received by the broadcast signal reception side device is recorded in a recording medium in the data broadcast data, and the broadcast signal is recorded from the recording medium. Control information incorporating means for incorporating special reproduction detection control information for detecting that special reproduction other than normal reproduction has been performed, and on the broadcast signal receiving side device, from the recording medium When the broadcast signal is reproduced, the data broadcast data is reproduced together with the video / audio data of the television broadcast program, and the special broadcast data is reproduced. Control information execution means for loading and executing reproduction detection control information, and when the broadcast signal is reproduced from the recording medium, the special reproduction detection control information specifies a time interval from the broadcast signal. A time data recording procedure for extracting the time data and sequentially recording the time data as reception time data, and obtaining a difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data. A difference calculation procedure and a reproduction determination procedure that compares the difference time with a reference value and determines normal reproduction when the difference time reaches the reference value and determines special reproduction at other times are written. It is characterized by that.

  Also, the special reproduction detection method for a television broadcast system according to the present invention is a television that multiplexes data broadcast data and time data with video / audio data of a television broadcast program to generate stream data and transmits it as a broadcast signal. The broadcast signal received by the broadcast signal receiving side device is incorporated in the data broadcasting data and includes special reproduction detection control information for detecting special reproduction other than normal reproduction in the data broadcasting data. When the broadcast signal is reproduced from the recording medium, the special reproduction detection control information is loaded when the special reproduction detection control information is loaded and the execution of the special reproduction is performed. In the special reproduction detection control information, when reproducing the broadcast signal from the recording medium, a time interval is designated to specify the time interval from the broadcast signal. A time data recording procedure for extracting time data and sequentially recording it as reception time data, and a difference for obtaining a difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data The calculation procedure and the difference determination time are compared with a reference value, and the reproduction determination procedure for determining normal reproduction when the difference time reaches the reference value and determining special reproduction at other times is written. It is characterized by that.

  In addition, the transmission station apparatus of the television broadcast system according to the present invention generates a stream data by multiplexing data broadcasting data and time data on video / audio data of a television broadcast program, and transmits it as a broadcast signal. Used in a broadcasting system, when the broadcast signal received by the broadcast signal receiving device is recorded on a recording medium and the broadcast signal is reproduced from the recording medium. Control information incorporating means for incorporating special reproduction detection control information for detecting that the special reproduction has been performed, the special reproduction detection control information includes a time when reproducing the broadcast signal from the recording medium. A time data recording procedure in which the time data is extracted from the broadcast signal by designating an interval and sequentially recorded as reception time data; and A difference calculation procedure for obtaining a difference time between the reception time data recorded last time in the time data recording procedure and the newly obtained reception time data; and comparing the difference time with a reference value, and calculating the difference time as the reference time. When the value is reached, it is determined that the normal reproduction is performed, and in other cases, the reproduction determination procedure for determining the special reproduction is written.

  The broadcast signal reproduction apparatus of the television broadcast system according to the present invention is a television that multiplexes data broadcast data and time data with video / audio data of a television broadcast program to generate stream data, and transmits it as a broadcast signal. A broadcast signal reproducing apparatus for reproducing a broadcast signal from a recording medium that has received and recorded the broadcast signal, wherein the received broadcast signal is recorded on the data broadcast data. When the broadcast signal is reproduced from the recording medium, special reproduction detection control information for detecting that special reproduction other than normal reproduction has been performed is incorporated, and the special reproduction detection control information is included in the special reproduction detection control information from the recording medium. When reproducing the broadcast signal, the time data is extracted from the broadcast signal by specifying a time interval, and is used as reception time data. A time data recording procedure for sequentially recording, a difference calculation procedure for obtaining a difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data, and the difference time as a reference value In comparison, when the difference time reaches the reference value, it is determined that the normal reproduction is performed, and when the reproduction determination procedure is determined that the special reproduction is determined otherwise, the broadcast signal is reproduced from the recording medium. Control information executing means for loading and executing the special reproduction detection control information from the data for broadcasting, and the reception time data extracted by execution of the special reproduction detection control information while sequentially recording And a memory for reading the received reception time data.

  That is, in the television broadcasting system, the special reproduction detection method thereof, the transmission station apparatus, and the broadcast signal reproduction apparatus having the above-described configuration, when the broadcast signal is recorded and reproduced at the reception side apparatus, together with the video / audio data of the television broadcast program When data broadcast data is recorded and played back, special broadcast detection control information is incorporated into the data broadcast data at the broadcast signal transmission side device, and when the broadcast signal recorded on the reception side is played back, the data broadcast The special reproduction detection control information is loaded from the reproduction data and executed. In this special reproduction detection control information, when reproducing a broadcast signal, time data is extracted from the broadcast signal at specified time intervals and sequentially recorded as reception time data, and newly acquired reception time data is newly obtained. It is written that the difference time with the received reception time data is obtained, this difference time is compared with a reference value, and normal playback is determined when the difference time becomes the reference value, and special playback is determined otherwise. . For this reason, the receiving side device is loaded with the special playback detection control information incorporated in the data broadcast data when the broadcast signal is played back to enter the special playback monitoring state, and the special playback is executed during playback of the recorded broadcast signal. The special reproduction can be detected. If the special playback detection control information is written so that the processing requested by the sending side is performed when the special playback is detected, the processing at the time of special playback detection can be arbitrarily designated and executed from the broadcast transmission side. Is possible.

  From the above, according to the present invention, the special transmission can be detected from the broadcast transmission side to the reception device side without adding a new function to the reception side. Thus, it is possible to provide a television broadcast system, a special reproduction detection method thereof, a transmission station apparatus thereof, and a broadcast signal reproduction apparatus capable of executing processing requested by the transmission side when the special reproduction is performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a transmission side equipment of a digital television broadcasting system to which the present invention is applied. In FIG. 1, a broadcast station apparatus 11 sends video / audio data of a normal television broadcast program to a transmission apparatus 112 together with data broadcast data generated by a data broadcast authoring apparatus 111. And stream data (for example, using TOT (Time Offset Table) described in ARIB (Association of Radio Industries and Businesses) standard) etc. are multiplexed to generate stream data and send it as a broadcast signal. The broadcast signal is modulated and power amplified by the transmitter 12 and transmitted from the transmission antenna 13 toward a predetermined service area.

  Here, in the data broadcast authoring apparatus 111, the contents of the normal broadcast program, the text information such as news and weather, the data of the image information, various control programs (for example, the display is controlled by the button operation of the remote controller), the normal It is possible to incorporate identification information (hereinafter referred to as CM identification information) or the like of specific content of a program (hereinafter described as an example of CM) into data broadcasting data. These are realized by using an ARIB standard module (configured by a BML (Broadcasting Markup Language) file, a binary table, an image file, etc.), an event message, and the like shown in Non-Patent Document 1.

  Therefore, in the present invention, the authoring device 111 detects the special reproduction that is loaded into the receiving device and is executed by the receiving device, and the special reproduction detection control information that causes the broadcast station to execute the processing that is requested at the time of detection. The data is written in the ARIB standard BML file, and the BML file is incorporated into the data broadcasting data and transmitted by the carousel transmission method. This BML file operates on the receiving side as a detection program shown in FIG. Further, in the data broadcasting data, CM identification information for identifying the CM broadcast section and the broadcast content is written in the event message or module. Details regarding the contents of the special reproduction detection control information and the write destination of the CM identification information will be described later. As CM identification information, not only CM but also identification information of content in a specific section of a normal program (for example, one corner of a program) may be written. That is, the CM is only an example of content in a specific section of a normal program. In the following, a CM will be described as an example in particular, but it can be applied to content in a specific section.

  FIG. 2 is a block diagram showing a configuration of a general recording / playback apparatus as an example of a digital television broadcast receiving apparatus having a recording / playback function for receiving a broadcast signal transmitted from the transmission antenna 13. This type of recording / playback apparatus complies with Non-Patent Document 1 and other ARIB standards and operational rules (technical documents) in Japan. In the example shown in FIG. 2, a plurality of functions for receiving and demodulating a broadcast signal, recording it on a recording medium, and reproducing the broadcast signal recorded on the recording medium are configured as one apparatus. These functions may be configured by a plurality of units.

  In FIG. 2, when a broadcast signal received by an antenna 21 is supplied to a recording / playback device 22, the receiving unit 221 selects and receives a channel and demodulates it into a transport stream (TS). The TS broadcast signal is sent to the recording unit 222 and recorded in a recording medium such as a hard disk during recording. At the time of reproduction, a TS broadcast signal designated for reproduction operation is read from the recording medium of the recording unit 222 and separated into video / audio data for normal broadcast programs and data for data broadcasting by a separation unit 223. Of these, the video / audio data is sequentially decoded by the video / audio processing unit 224, and after the screen synthesis with the data broadcast is performed by the display processing unit 225, it is sent to the monitor 23 for display and audio output.

  On the other hand, the data broadcast data separated by the separation unit 223 is sent to the data broadcast processing unit 226. In this data broadcast processing unit 226, various information in the data for data broadcasting is converted into a designated format and sent to the display processing unit 225. When the display processing unit 225 receives display data from the data broadcast processing unit 226, the display processing unit 225 controls the display processing unit 225 to display the display data in a predetermined layout on the screen. Further, the data broadcast processing unit 226 loads the above-mentioned special reproduction detection control information incorporated in the data for data broadcasting and loads the time management function P1, the memory management function P2, and the special reproduction detection described in the information. The function P3, CM section determination function P4, and control processing function P5 when special reproduction is detected are executed.

  The time management function P1 is a function for extracting time data multiplexed on the broadcast signal read from the recording unit 222 at a time interval (for example, 5 seconds) specified in the control information. Furthermore, a function is provided for acquiring absolute time data during reproduction from a built-in timer (adjusted based on TOT or the like when receiving a broadcast signal) 227 at a time interval (for example, 5 seconds) specified in the control information. May be.

  The memory management function P2 uses a built-in memory (for example, a volatile memory activated when the power is turned on) provided in the recording / playback device 22, but may be a nonvolatile memory that retains data even when the power is turned off. The ARIB standard specifies that Greg and Ureg are secured as volatile memory areas and NVRAM is secured as a nonvolatile memory.) Using the partial area 228, the reception time obtained by the time management P1 This function manages the writing / reading of time data and absolute time data during reproduction.

  The special reproduction detection function P3 obtains reception time data and reproduction absolute time data during reproduction through the function of the memory management P2, and determines normal reproduction / special reproduction by comparison with a difference calculation and a reference value described later. It is a function.

  The CM section determination function P4 acquires CM identification information incorporated by using an event message or module of data broadcasting data at the time of reproduction of a broadcast signal, and which CM is in which section from the acquired CM identification information. This is a function for determining whether or not.

  When the execution of special playback is detected, the control processing function P5 at the time of special playback detection discriminates a predetermined process, for example, skipping all or part of the CM section by skip playback for a certain period of time. This function performs processing such as displaying sponsor information superimposed on video.

(First embodiment)
In the television broadcasting system having the above-described configuration, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 3 shows a case where the recording / playback apparatus 22 has a function of special playback of specific content by a user operation as a first embodiment, and is written in an ARIB standard BML file transmitted by a carousel transmission system. 5 is a flowchart showing a flow of control by special reproduction detection control information. The flow of this process will be described with reference to the timing chart at the time of reproduction shown in FIG.

  In FIG. 3, when normal playback start is instructed, by specifying browser.setCurrentDateMode (1) according to the instruction specification described in Non-Patent Document 1 in BML, the type of time data handled (hereinafter, time mode) Is set as the reception time (step S11). Next, the date function is specified in accordance with the instruction rule described in Non-Patent Document 1 in the above BML, the reception time is acquired from the reproduction data (step S12), and the acquired reception time and the previous time are written in the memory 228. The difference (seconds) from the reception time is calculated (step S13). However, since there is no data written in the memory 228 for the first time, this step S13 is omitted. Also, the new reception time data used in the above calculation is browser.Greg [1] = reception time (in this example, the memory area of Greg) according to the instruction specification described in Non-Patent Document 1 in the BML. Is stored) in the memory 228 (step S14).

  Subsequently, it is determined whether or not the difference value (seconds) calculated in step S13 matches the specified value X specified by BML (step S15). However, this step S15 is also omitted because there is no determination target for the first time. On the other hand, in step S15, if they match, it is determined that normal playback is performed, and after X seconds have been counted (video / audio continues) (step S16), the process returns to step S12 to acquire the next reception time. Thereby, reception time data is acquired at intervals of X seconds. In step S15, if the difference value is different from the specified value X, it is determined that skipping has been executed as special reproduction, and a predetermined special reproduction detection process is executed (step S17). Then, the process proceeds to step S16.

  The standby process in step S16 is specified by Browser.setInterval in accordance with the instruction rules described in Non-Patent Document 1 in the BML. As processing at the time of detecting special reproduction, for example, it is conceivable to write arbitrary character data in an event message or a module in data broadcasting, and display the character superimposed on the video for a certain period. Specific examples will be described later. Even when special broadcast is being executed, the execution of data broadcast data is stopped, the data broadcast data is reloaded after special playback is completed, and special playback detection control processing is resumed. Since the reception time data stored in is stored as it is until the next rewrite, the detection process can be continued even after the process is resumed. In addition, even if the apparatus is configured to continue the processing even during execution of special reproduction, the basic operation does not change, and the present invention can be implemented.

  In the above processing, FIG. 4A shows a state in which the reception time data is extracted from the reproduction data at normal reproduction at intervals of 5 seconds. In normal reproduction, the reception time extracted in step S12 is sequentially written in the memory 228 in step S14 at the interval X = 5 seconds specified in step S16, and the reception time written in the previous memory 228 in step S13. When the difference is obtained, the value is naturally 5 seconds. Therefore, by setting the prescribed value X to 5 seconds, it can be determined that normal reproduction is being performed while the difference in reception time data is 5 seconds in step S15.

  FIG. 4B shows an example of reception time data extracted when the user designates a 30-second skip operation during the normal playback. As shown in this example, in the normal playback section, the difference in reception time data is 5 seconds, but if a 30-second skip is executed at 10:08:58, the program is reloaded after the skip is completed in step S12. Then, the value 10:09:28 of the reception time obtained next is a value 30 seconds or more after the reception time 10:08:56 acquired and stored immediately before skipping. Accordingly, the difference value calculated in step S13 is 30 seconds or more, which is different from the specified value X (5 seconds), so that it is possible to detect that special reproduction has been executed in step S15. At this time, since the start point and end point of special reproduction are almost detected, it is also possible to simultaneously detect special reproduction sections (approximately 10:08:56 to 10:09:28 at the time of reception).

  As described above, according to the present embodiment, using the fact that the receiving apparatus already has a specification capable of executing data broadcasting broadcast according to the ARIB standard, a BML file based on ARIB standard data broadcasting is used. The special reproduction detection control program is incorporated in the broadcasting station and sent from the broadcasting station side to the receiving device. Therefore, even if a function is not newly added to the receiving side, the broadcast transmission side can perform detection of special playback from the receiving device side, and when special content is played back specially, Processing requested by the station can be executed.

  In the above embodiment, the case where special playback is detected with X = 5 seconds has been described. However, the value of X is not limited to this, and the value of X specified in the BML file can be changed. It can be set arbitrarily. The type of special playback is not limited to the 30-second skip operation, and the difference value calculated in step S13 is different from the specified value X even in the case of double speed playback, slow playback, and reverse playback. Therefore, it can be detected that special reproduction has been executed.

(Second embodiment)
In the television broadcasting system having the above-described configuration, a second embodiment of the present invention will be described with reference to FIGS.

  FIG. 5 shows, as a second embodiment, control based on special reproduction detection control information when it is assumed that the recording / playback apparatus 22 has a plurality of types of functions for special reproduction and each function is individually determined. It is a flowchart which shows the flow. The flow of this process will be described with reference to the timing chart at the time of reproduction shown in FIG. In this embodiment, the first memory area and the second memory area are secured in the built-in memory 228 for special reproduction detection control.

  In FIG. 5, when normal playback start is instructed, the time mode is set to the reception time by specifying browser.setCurrentDateMode (1) in accordance with the instruction specification described in Non-Patent Document 1 in the BML ( Step S21). Next, the date function is specified in accordance with the instruction rule described in Non-Patent Document 1 in the BML, the reception time is acquired (step S22), and the acquired reception time and the previous time are stored in the first memory area. The difference (seconds) from the reception time is calculated (step S23). At this time, it is newly acquired by specifying browser.Greg [1] = reception time (in this example, the Greg memory area is secured) in accordance with the instruction rules described in Non-Patent Document 1 in the above BML The received reception time is stored in the first memory area (step S24). Since there is no data in the first memory area for the first time, step S23 is omitted.

  Next, by specifying browser.setCurrentDateMode (0) in accordance with the instruction specification described in Non-Patent Document 1 in the BML, the time mode is set to the absolute time during playback (step S25). Next, the BML is used to specify the Date function in accordance with the instruction rules described in Non-Patent Document 1, and the playback absolute time is acquired (step S26), and the acquired playback absolute time and the previous second memory area are stored. The difference (seconds) from the reproduced absolute time is calculated (step S27). At this time, by specifying browser.Greg [2] = reproduction absolute time (Greg memory area is secured in this example as well) in accordance with the instruction rule described in Non-Patent Document 1 in the above BML, The acquired reproduction absolute time is stored in the second memory area (step S28). Since there is no data in the second memory area for the first time, step S27 is omitted.

  Subsequently, a quotient (= Y) between the difference in reception time calculated in step S23 and the difference in absolute time during reproduction calculated in step S27 is calculated (step S29). To determine the type of special playback. However, since the calculation is not performed in steps S23 and S27 for the first time, all steps after step S29 are omitted, and the process returns to step S21 through the process of step S38.

  When the value of the quotient Y is obtained in step S29, first, it is determined whether the quotient Y is in the range of 0 <Y <1 (step S30). Sometimes, a predetermined process is executed (step S31). When the quotient Y is not in the range of 0 <Y <1 in step S30, it is determined whether or not the quotient Y is 1 <Y ≦ M (M is the maximum value of double-speed reproduction of the device) (step S32), 1 <Y ≦ M If so, it is determined that the reproduction is Y double speed reproduction, and a process defined in advance at the time of detection is executed (step S33).

  If 1 <Y ≦ M is not satisfied in step S32, it is determined whether the quotient Y> M is satisfied (step S34). If Y> M, it is determined that skip reproduction is performed, and a process specified in advance is executed at the time of detection. (Step S35). In other words, normal fast-forward playback is at most about 3 × speed or 5 × speed, and when it is played back at a speed higher than that, images are hardly recognized in practice. Therefore, for example, if it is determined in step S34 that Y> M with respect to the maximum value M (for example, M = 5) of double speed reproduction, it is considered that skip reproduction has been performed.

  When Y> M is not satisfied in step S34, it is determined whether the quotient Y is negative (Y <0) (step S36). The prescribed process is executed (step S37).

  If none of the above conditions of steps S30, S32, S34, and S36 is met (that is, Y = 1 means normal reproduction. Theoretically, Y = 0 does not exist), or steps S31, S33, S35. , S37 is counted, X seconds are counted (reproduction of video / audio is continued) (step S38: designated by Browser.setInterval in accordance with the instruction specification described in Non-Patent Document 1 in the BML), After the count-up, the process returns to step S21 and shifts to the next cycle.

  In the above processing flow, the playback absolute time is processed after the reception time is processed. However, this is in no particular order, and even if the playback absolute time is processed first, the result is as follows. does not change. Of course, each process may be executed simultaneously.

  Further, in this embodiment, even when special playback is performed, even if the program processing by the special playback detection control information is stopped and reloaded after completion of special playback, the memory area is Since the data of the reception time and the absolute time of reproduction recorded in the above are stored as they are, the detection process can be continued even after the process is resumed. In addition, even if the apparatus is configured to continue the processing even during execution of special reproduction, the basic operation does not change, and the present invention can be implemented.

  In this embodiment, the special playback has been described with respect to slow playback, double speed playback, skip playback, and reverse playback. However, it is also possible to detect a stop or pause. For example, it can be determined that the difference value of the reception time calculated in step S23 becomes zero.

  In the above processing, FIG. 6A shows an example of time acquisition during normal playback. If the designated X is 5 seconds in step S38, the reception time and the reproduction absolute time are acquired at intervals of 5 seconds in normal reproduction (steps S22 and S26). When the difference between the reception time acquired in step S22 and the reception time written in the first memory area in step S23 is obtained, the value is naturally 5 seconds. On the other hand, when the difference between the reproduction absolute time acquired in step S26 and the reproduction absolute time written in the second memory area in step S27 is obtained, this is naturally a value of 5 seconds. Therefore, the value of the quotient Y calculated in step S29 is 1. Y = 1 does not correspond to any of steps S30, S32, S34, and S36. From this, it can be determined that normal reproduction is being performed.

  FIG. 6B shows an example of time acquisition extracted when the user designates double-speed playback (Y = 2) during the normal playback. In this example, the difference in reception time in the normal playback section is 5 seconds. However, as shown in the figure, the reception time 10:08:56 and the playback absolute time 19:25:24 are obtained and After storing in the memory area, special playback (in this case, double speed playback) is executed at the time of reception 10:08:59 and absolute time of playback 19:25:27, and the program is reloaded and received after normal playback. It is assumed that time time 10:09:39 and playback absolute time 19:25:47 are obtained. In this example, since the reception time stored in the first memory area before the start of special reproduction is 10:08:56, the difference in reception time obtained in step S23 is 42 seconds. On the other hand, with respect to the absolute time during playback, the absolute time during playback obtained after the end of special playback is 19:25:47, and the absolute time during playback stored in the second memory area before the start of special playback is 19:25:24 Therefore, the difference in absolute time during reproduction obtained in step S27 is 23 seconds. At this time, the value of the quotient Y calculated in step S29 is 1.8 (about twice). Since this coincides with the determination in step S32 (1 <Y ≦ M?), It is determined that double speed reproduction has been executed. Therefore, in the case of this example, the compensation process at the time of detecting the double speed reproduction is executed in step S33. At this time, it is also possible to detect a section reproduced at double speed (approximately 10:08:56 to 10:09:39 at the time of reception).

  FIG. 6C shows an example of time acquisition extracted when the user designates a 30-second skip operation during the normal playback. In FIG. 6C, the difference in reception time in the normal playback section is 5 seconds. Now, it is assumed that special playback with 30-second skip is executed at the timing shown in the figure (reception time 10:08:58, playback absolute time 19:25:26). If the reception time obtained after returning to normal playback and reloading the program is 10:09:28, and the reception time stored in the first memory area is 10:08:56, the reception time obtained in step S23 The time difference is 32 seconds. On the other hand, for the playback absolute time, when the skip process is performed, the special playback detection process is reloaded, and the playback absolute time immediately after the completion of the skip is acquired. For this reason, when a 30-second skip is specified at the timing shown in the figure, the time after executing the skip playback is 19:25:27, and the playback absolute time previously stored in the second memory area is 19:25. : It becomes like 24. In this case, the difference in absolute time during reproduction obtained in step S27 is 3 seconds. At this time, the value of the quotient Y calculated in step S29 is 10.7, which is a sufficiently large value. If, for example, M = 5 is set in step S34, Y> 5 is obtained, thereby making it possible to detect skip reproduction. In addition, it is possible to detect a section that is skip-played at the same time (approximately 10:08:56 to 10:09:28 at the time of reception).

  Although details are omitted, in the case of reverse playback, the reverse playback detection and the reverse playback section can be detected by the same method. Similarly, slow playback is possible. In the above description, the double speed value is expressed including the decimal part. However, the double speed value is generally different depending on the specifications of the apparatus and individual differences. Depending on the apparatus, the double speed value may be fixedly determined such as double speed or triple speed. In this case, it is possible to cope with the specifications of the apparatus by determining the range for determining the double speed value in advance.

  As described above, in the second embodiment, as the special reproduction detection control program incorporated in the BML file defined by the ARIB standard, the type of special reproduction is automatically determined, and processing corresponding to each is performed. It can be executed. Accordingly, it is possible to perform various treatments according to the viewing situation of specific content during special playback.

  In the second embodiment, the case where special playback is detected with X = 5 seconds has been described. However, as in the first embodiment, the value of X is not limited to this, and is specified in the BML file. It can be set arbitrarily by changing the numerical value.

(Third embodiment)
In the first and second embodiments, the technique for detecting when special playback is performed during normal playback has been described. However, when a special playback section detected by this special playback detection is covered with a CM section. In addition, there is a strong demand for some compensation. In the third embodiment, a technique for determining the viewing status of the CM section during the special reproduction detected in the above embodiment and executing the compensation process will be described.

  Here, in the ARIB standard, content information used in a broadcast program is appropriately written in a data broadcast event message (which may be a module configured in a BML file or the like), and the information is stored in the receiving device. Can be recognized. Therefore, for example, during the broadcast period of one program frame, an event message is made to flow at a constant interval (for example, every Z seconds), and CM identification information for identifying the CM section and contents is written in each event message. Shall.

  FIG. 7 is a flowchart showing a flow of processing for determining whether or not all or part of the CM section is skipped when skip playback is performed as an example of special playback. This processing program is also incorporated into the ARIB standard BML file, and is multiplexed and transmitted to the broadcast signal as data broadcast data, so that it is loaded when reproducing the broadcast signal recorded on the receiving device side. It is executed together with the processing program of the embodiment. Although FIG. 7 shows an example of processing at the time of skip reproduction detection, it can also be applied to processing at the time of other special reproduction detection such as processing at the time of Y double speed reproduction detection.

  In FIG. 7, when skip playback is detected by the special playback detection process shown in FIG. 5 and the process at the time of skip playback detection (step S35) is started, CM identification information before the time point when skip playback is detected is first obtained. It is determined whether it can be acquired (step S41). If an event message containing CM identification information is not received at this point, CM identification information is not obtained, so Z seconds (here, the same Z interval as the transmission interval of the event message, but at different intervals). However, it can also be implemented.) Sleep (standby) (step S42), and return to the determination process of step S41. In this way, acquisition of CM identification information is determined at intervals of Z seconds.

  If it is determined in step S41 that the CM identification information has been acquired, the CM section indicated in the CM identification information is compared with the skipped section to determine whether or not they overlap (step S43). If the skip section overlaps with the CM section, it is determined that the CM skip has been performed, the process at the time of detecting the CM skip is performed (step S44), and the process at the time of detecting the skip reproduction is ended. If the skip section does not overlap with the CM section, it is determined that the CM is not skipped, and the process at the time of skip reproduction detection is terminated.

  With the above processing, it is possible to detect whether or not a CM skip is satisfied when skip reproduction is performed. Next, a method for transmitting CM identification information indicating a CM section will be described more specifically with reference to FIG.

  In television broadcasting, when a commercial is broadcast within a program frame, a commercial broadcast according to a predetermined schedule (hereinafter referred to as a confirmed commercial) and a commercial section are arbitrarily arranged according to the situation, as in baseball broadcasting. CM (hereinafter referred to as untime CM) is used. In the case of a confirmed CM, for example, the CM section is written in advance by a method such as writing CM identification information broadcast in the program frame into a BML file or sending an event message in which all CM identification information is periodically incorporated in the program frame. Can be notified. However, in the case of an untimed CM, since the CM section cannot be determined in advance, the above method cannot be used. Therefore, in the case of an untimed CM, CM identification information is transmitted as shown in FIG.

  In FIG. 8, CM (1), CM (2), CM (3),... Are inserted during the broadcast of program A (A1, A2, A3, A4,. FIG. 10 is a timing diagram illustrating an example in which identification information of each CM is notified by an event message.

  In the example shown in FIG. 8, after the broadcast of the program A is started, an event message including the identification information of the CM that has started the broadcast from the start of the broadcast of the first CM (1) to the end of the program A is predetermined. It is assumed that transmission is performed at intervals (for example, Z seconds in FIG. 7). Each time each CM (2), CM (3), CM (4),... Is broadcast, the identification information of the CM that has started broadcasting is sequentially added and incorporated into the event message. If the identification information of each CM is flowed by this method, the following processing is performed for each skip section ST1 to ST5 in FIG. Although FIG. 8 shows an example of skip reproduction, the present invention can also be applied to other special reproduction such as double speed reproduction.

  First, when there is a skip in almost the entire CM (1) section as in the skip section ST1, the skip section ST1 is detected simultaneously with the detection of the skip operation at the end of the skip. Since the event message given immediately after that incorporates the identification information of CM (1), the broadcast section of CM (1) is determined from this identification information. Comparing the determined broadcast section of CM (1) with the detected skip section ST1, the skip section ST1 overlaps almost all of the sections of CM (1). From this, it is possible to detect that the section of CM (1) has been skipped.

  If only the latter half of the CM (2) section is skipped as in the skip section ST2, the skip section ST2 is detected simultaneously with the detection of the skip operation at the end of the skip. Since the identification information of CM (1) and CM (2) is incorporated in the event message given immediately thereafter, the broadcast section of CM (1) and CM (2) is determined from each identification information. Comparing the determined broadcast sections of CM (1) and CM (2) with the detected skip section ST2, the skip section ST2 overlaps the latter half of the section of CM (2). From this, it is possible to detect that the second half of the section of CM (2) has been skipped.

  Similarly, when only the first half of the CM (3) section is skipped as in the skip section ST3, the skip section ST3 is detected simultaneously with the detection of the skip operation at the end of the skip. Since the identification information of CM (1), CM (2), CM (3) is incorporated in the event message given immediately thereafter, CM (1), CM (2), CM ( The broadcast section of 3) is determined. Comparing the determined CM (1), CM (2), and CM (3) broadcast sections with the detected skip section ST3, the skip section ST3 overlaps the first half of the CM (3) section. From this, it is possible to detect that the first half of the section of CM (3) has been skipped.

  Further, as in the skip section ST4, when the broadcast of CM (1) is skipped to the broadcast end section of CM (2), the skip section is detected simultaneously with the detection of the skip operation when the skip ends. Since the identification information of CM (1) and CM (2) is incorporated in the event message given immediately thereafter, the broadcast section of CM (1) and CM (2) is determined from each identification information. Comparing the determined broadcast sections of CM (1) and CM (2) with the detected skip section ST4, the skip section ST4 overlaps with the sections of CM (1) and CM (2). From this, it is possible to detect that both sections of CM (1) and CM (2) are skipped.

  Similarly, when skipping to the broadcast end section of CM (3) after the start of broadcasting of CM (1) as in skip section ST5, the skip section is detected simultaneously with the detection of the skip operation at the end of the skip. . Since the identification information of CM (1), CM (2), CM (3) is incorporated in the event message given immediately thereafter, CM (1), CM (2), CM ( The broadcast section of 3) is determined. Comparing the determined CM (1), CM (2), and CM (3) broadcast sections with the detected skip sections, the skip sections ST5 are CM (1), CM (2), and CM (3), respectively. It overlaps with the section. From this, it is possible to detect that the section of CM (1), CM (2), CM (3) has been skipped.

  As described above, every time a CM broadcast is started, the CM identification information is added to the periodically transmitted event message and incorporated, so that even an untimed CM can be detected reliably. can do. Of course, even in the case of a definite CM, it is possible to reliably detect a CM skip using this method.

  In the above-described embodiment, the case where the CM identification information is notified by an event message has been described. However, the case where notification is made using a module is also possible.

  FIG. 9 is a timing chart showing the state of processing when a CM skip is performed during playback of a program recorded by the above control, and shows an example of compensation processing for CM skip. The processing shown in FIG. The compensation process will be described along the flow.

  FIG. 9A conceptually shows the contents of the content that is normally played back. Here, it is assumed that contents are reproduced in the order of program A1, CM (1), and program A2. Now, as shown in FIG. 9B, it is assumed that the skip operation corresponding to the CM section is performed simultaneously with the start of the reproduction of the CM content. In this case, the skip reproduction is detected simultaneously with the completion of the skip by the special reproduction detection process, and the process at the time of the skip reproduction detection shown in FIG. 7 is started. On the other hand, CM identification information is acquired from an event message or a module during the broadcast period of program A (A1, A2,...). For this reason, acquisition of the CM identification information is confirmed in step S41, and the CM section is determined from this CM identification information. In the example of FIG. 9B, since the CM section overlaps the skip section, it is determined in step S43 that the skipped section and the CM section overlap, and the process at the time of CM skip detection is executed in step S44. The

  As the CM skip detection process, for example, as shown in FIG. 9B, the CM compensation process is executed during the period corresponding to the CM section from the skip detection time. For example, as shown in FIG. 9C, when the program A2 is displayed on the display screen, characters such as “This program is sent with the provision of XX” are displayed during the compensation period. It is conceivable to display the columns superimposed on the video. The display example itself is described in Patent Document 1, but here, the display is executed by a processing procedure defined by the ARIB standard. It does not depend on the functions unique to the receiver. Therefore, it is possible to realize the compensation processing represented by the above example for all the receiving devices conforming to the ARIB standard.

  In the second embodiment, the type of special reproduction can be determined. Therefore, for example, when the specific content is a CM, when the CM section is played slowly, a character string or an image indicating the details of the product is displayed superimposed on the video of the program. When the CM section is played back at double speed or skipped It is conceivable that the sponsor name is displayed over the video of the program for a certain period after returning to normal playback. Character strings and images such as sponsor names can be transmitted using modules and event messages in accordance with the instruction rules described in Non-Patent Document 1, or can be obtained by connecting to a communication server. is there. In addition, when a service for converting CM viewing points is implemented, special points such as 1 point for normal playback, 2 points for slow playback, 0 points for double speed playback or skip playback, etc. It is also conceivable to change the conversion value according to the form of reproduction.

  As described above, in the third embodiment, the case where the specific content is a CM has been described. However, the present invention is not limited to this, and for example, a section such as one or a plurality of corners in a program is specified. Even content can be implemented in the same manner.

  The present invention is particularly effective when applied to hard disk recorders that are rapidly spreading at present. However, the present invention is not limited to this, and broadcast signals are stored by a home video server or the like. Even a system that reproduces this can be implemented in the same manner. The present invention can be applied to any of terrestrial television broadcasting, satellite television broadcasting, cable television broadcasting, and the like. In addition, the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

The block diagram which shows the structure of the transmission side installation of the digital television broadcasting system with which this invention is applied. The block diagram which shows the structure of the digital television broadcast receiver which has a recording / reproducing function which receives the broadcast signal transmitted from the transmission side of FIG. The flowchart which shows the flow of the basic control by special reproduction | regeneration detection control information as a 1st Example. FIG. 4 is a timing chart showing how processing is performed when a recorded program is normally played back and when skipping is performed during normal playback in the processing shown in FIG. 3. The flowchart which shows the flow of control by special reproduction | regeneration detection control information in the case of determining several types of functions as special reproduction | regeneration as 2nd Example. In the processing shown in FIG. 5, when the recorded program is normally played, when double speed playback (Y = 2) is performed during normal playback, and when skip playback is performed FIG. 10 is a flowchart showing a flow of processing for determining whether or not all or part of a CM section is skipped when skip playback is performed as special playback, as a third embodiment. The timing diagram which shows the example in the case of notifying the identification information of each CM with an event message, when a some CM content is inserted during a program broadcast. FIG. 8 is a timing chart showing a state of processing when a CM skip is performed during playback of a recorded program in the processing shown in FIG. 7, and a diagram showing an example of compensation processing for CM skip.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Broadcast station apparatus, 111 ... Data broadcast authoring apparatus, 112 ... Sending apparatus, 12 ... Transmitter, 13 ... Transmitting antenna, 21 ... Antenna, 22 ... Digital television broadcast receiving apparatus (recording / reproducing apparatus), 221 ... Receiver 222, recording unit, 223, separation unit, 224, video / audio processing unit, 225, display processing unit, 226, data broadcast processing unit, 227, built-in timer, 228, built-in memory, 23, monitor, P1, time management Function, P2 ... Memory management function, P3 ... Special reproduction detection function, P4 ... CM section determination function, P5 ... Control processing function when special reproduction is detected.

Claims (24)

It is used in a television broadcast system that generates stream data by multiplexing data broadcasting data and time data on video / audio data of a television broadcast program, and transmits it as a broadcast signal.
Incorporating special reproduction detection control information for detecting special reproduction other than normal reproduction in the data for data broadcasting, the broadcast signal received by the broadcast signal receiving device is recorded on a recording medium, and the recording medium When the broadcast signal is reproduced from, the special reproduction detection control information is loaded, and the special reproduction detection method for detecting that the special reproduction is performed by executing the broadcast signal,
In the special reproduction detection control information,
When reproducing the broadcast signal from the recording medium, a time data recording procedure for specifying a time interval and extracting the time data from the reproduction signal of the broadcast signal and sequentially recording it as reception time data;
A difference calculation procedure for obtaining a difference time between the reception time data recorded last time in the time data recording procedure and the newly obtained reception time data;
The difference time is compared with a reference value, and a reproduction determination procedure for determining normal reproduction when the difference time reaches the reference value and determining special reproduction at other times is written. Special reproduction detection method for broadcasting system.   In addition to the reception time data, the time data recording procedure is written to acquire and record playback absolute time data by designating a time interval from the time measuring means provided in the receiving device, In the difference calculation procedure, a first difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data is obtained, and the previously recorded absolute time data at the time of reproduction is newly calculated. The second difference time with the absolute time data at the time of reproduction obtained is written, and the reproduction determination procedure divides the first difference time by the second difference time to obtain the quotient 2. The method for detecting special reproduction of a television broadcasting system according to claim 1, wherein the determination of the type of special reproduction from the value is written. Further, the special reproduction detection control information includes
A broadcast period determination procedure for determining whether or not at least a part of the broadcast period of the specific content is included in the special reproduction determination period determined as the special reproduction is performed;
When it is determined in the broadcast period determination procedure that at least a part of the broadcast period of the specific content is included in the special playback determination period, a control procedure for performing a predetermined process is written. The method for detecting special reproduction of a television broadcasting system according to claim 1 or 2. In the data for data broadcasting, identification information of the specific content is incorporated,
4. The method for detecting special reproduction of a television broadcast system according to claim 3, wherein the broadcast period determination procedure is written with reference to the identification information to determine the broadcast period of the specific content.   5. The special reproduction detection method for a television broadcasting system according to claim 4, wherein the identification information of the specific content is incorporated as a module or event message of the data broadcasting data.   When broadcasting a plurality of contents as the specific contents in a specific period within the television broadcast program frame, the broadcast starts at least from the start of the first content broadcast until the end of the program frame. The module or event message in which the content identification information is incorporated is transmitted at a predetermined interval, and each time the plurality of contents are broadcast, the content identification information for which the broadcast has started is sent to the module or event. 6. The special reproduction detection method for a television broadcasting system according to claim 5, wherein the special reproduction detection method is incorporated in the message sequentially. In a television broadcasting system that multiplexes data broadcasting data and time data with video / audio data of a television broadcasting program to generate stream data and transmits it as a broadcast signal,
Provided in the broadcast signal transmission side device, the broadcast signal received by the broadcast signal reception side device is recorded on a recording medium in the data broadcast data, and the broadcast signal is reproduced from the recording medium Control information incorporating means for incorporating special reproduction detection control information for detecting that special reproduction other than normal reproduction has been performed,
Provided in the broadcast signal receiving side device, when reproducing the broadcast signal from the recording medium, the data broadcast data is reproduced together with the video / audio data of the television broadcast program, and the special reproduction detection control is performed. Control information execution means for loading and executing information,
The special reproduction detection control information includes a time data recording procedure for specifying a time interval and extracting the time data from the broadcast signal and sequentially recording it as reception time data when reproducing the broadcast signal from the recording medium. A difference calculation procedure for obtaining a difference time between the reception time data recorded last time in the time data recording procedure and a newly obtained reception time data, and comparing the difference time with a reference value, The television broadcast system is characterized in that a reproduction determination procedure for determining that the normal reproduction is determined when the value becomes the reference value and the special reproduction is determined otherwise is written.   In addition to the reception time data, the time data recording procedure is written to acquire and record playback absolute time data by designating a time interval from the time measuring means provided in the receiving device, In the difference calculation procedure, a first difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data is obtained, and the previously recorded absolute time data at the time of reproduction is newly calculated. The second difference time with the absolute time data at the time of reproduction obtained is written, and the reproduction determination procedure divides the first difference time by the second difference time to obtain the quotient 8. The television broadcasting system according to claim 7, wherein the judgment of the type of special reproduction is written from the value. Further, the special reproduction detection control information includes
A broadcast period determination procedure for determining whether or not at least a part of the broadcast period of the specific content is included in the special reproduction determination period determined as the special reproduction is performed;
When it is determined in the broadcast period determination procedure that at least a part of the broadcast period of the specific content is included in the special playback determination period, a control procedure for performing a predetermined process is written. The television broadcasting system according to claim 7 or 8. In the data for data broadcasting, identification information of the specific content is incorporated,
10. The television broadcast system according to claim 9, wherein the broadcast period determination procedure is written with reference to the identification information to determine the broadcast period of the specific content.   11. The television broadcast system according to claim 10, wherein the identification information of the specific content is incorporated as a data broadcast data module or an event message.   When broadcasting a plurality of contents as the specific contents in a specific period within the television broadcast program frame, the broadcast starts at least from the start of the first content broadcast until the end of the program frame. The module or event message in which the content identification information is incorporated is transmitted at a predetermined interval, and each time the plurality of contents are broadcast, the content identification information for which the broadcast has started is sent to the module or event. 12. The television broadcasting system according to claim 11, wherein the television broadcasting system is sequentially added to a message and incorporated. It is used in a television broadcast system that generates stream data by multiplexing data broadcasting data and time data on video / audio data of a television broadcast program, and transmits it as a broadcast signal.
When the broadcast signal received by the broadcast signal receiving device is recorded on a recording medium in the data for data broadcasting and the broadcast signal is reproduced from the recording medium, special reproduction other than normal reproduction is performed. Control information incorporating means for incorporating special reproduction detection control information for detecting
In the special reproduction detection control information, when reproducing the broadcast signal from the recording medium, time data recording is performed in which the time data is extracted from the broadcast signal by specifying a time interval and sequentially recorded as reception time data. A difference calculation procedure for obtaining a difference time between the reception time data recorded last time in the time data recording procedure and the newly obtained reception time data, and comparing the difference time with a reference value, A transmission station apparatus for a television broadcasting system, in which a reproduction determination procedure for determining normal reproduction when time reaches the reference value and determining special reproduction at other times is written.   In addition to the reception time data, the time data recording procedure is written to acquire and record playback absolute time data by designating a time interval from the time measuring means provided in the receiving device, In the difference calculation procedure, a first difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data is obtained, and the previously recorded absolute time data at the time of reproduction is newly calculated. The second difference time with the absolute time data at the time of reproduction obtained is written, and the reproduction determination procedure divides the first difference time by the second difference time to obtain the quotient 14. The transmission station apparatus of a television broadcast system according to claim 13, wherein the judgment of the type of special reproduction is written from the value. Further, the special reproduction detection control information includes
A broadcast period determination procedure for determining whether or not at least a part of the broadcast period of the specific content is included in the special reproduction determination period determined as the special reproduction is performed;
When it is determined in the broadcast period determination procedure that at least a part of the broadcast period of the specific content is included in the special playback determination period, a control procedure for performing a predetermined process is written. The transmission station apparatus of the television broadcasting system according to claim 13 or 14. In the data for data broadcasting, identification information of the specific content is incorporated,
16. The transmission station apparatus for a television broadcast system according to claim 15, wherein the broadcast period determination procedure is written with reference to the identification information to determine a broadcast period of the specific content.   17. The transmission station apparatus of a television broadcast system according to claim 16, wherein the identification information of the specific content is incorporated as a data broadcast data module or an event message.   When a plurality of contents are broadcast as the specific contents in a specific period within the television broadcast program frame, the broadcast starts at least from the start of the first content broadcast until the end of the program frame. The module or event message in which the content identification information is incorporated is transmitted at a predetermined interval, and each time the plurality of contents are broadcast, the content identification information for which the broadcast has started is sent to the module or event. The transmission station apparatus of the television broadcast system according to claim 17, wherein the transmission station apparatus is sequentially added to a message and incorporated. Recording medium for receiving and recording the broadcast signal used in a television broadcast system that multiplexes data broadcasting data and time data with video / audio data of a television broadcast program to generate stream data and transmits it as a broadcast signal A broadcast signal reproduction device for reproducing the broadcast signal from:
Special reproduction detection for detecting that special reproduction other than normal reproduction is performed when the received broadcast signal is recorded on the recording medium and the broadcast signal is reproduced from the recording medium. Control information is embedded,
When reproducing the broadcast signal from the recording medium in the special reproduction detection control information, the time data is extracted by designating a time interval and sequentially recorded as reception time data, and the time A difference calculation procedure for obtaining a difference time between the reception time data previously recorded in the data recording procedure and the newly obtained reception time data; and comparing the difference time with a reference value, and calculating the difference time to the reference value When it is written, the playback determination procedure is determined to be normal playback, and otherwise determined to be special playback.
Control information execution means for loading and executing the special reproduction detection control information from the data broadcast data when reproducing the broadcast signal from the recording medium;
A memory for reading the reception time data recorded last time while sequentially recording the reception time data extracted by execution of the special reproduction detection control information;
A broadcast signal reproducing apparatus for a television broadcasting system, comprising: Furthermore, a time measuring means for generating absolute time data is provided,
In the time data recording procedure, it is written that, apart from the reception time data, a time interval is designated from the time measuring means to acquire and record playback absolute time data, and the difference calculation procedure includes The first difference time between the reception time data previously recorded in the time data recording procedure and the newly obtained reception time data is obtained, and the previously recorded reproduction absolute time data and the newly obtained reproduction are obtained. It is written that the second difference time with respect to the time absolute time data is obtained, and the reproduction determination procedure divides the first difference time by the second difference time and calculates the special reproduction from the value of the quotient. 20. The broadcast signal reproducing apparatus of the television broadcast system according to claim 19, wherein the type determination is written. Further, the special reproduction detection control information includes
A broadcast period determination procedure for determining whether or not at least a part of the broadcast period of the specific content is included in the special reproduction determination period determined as the special reproduction is performed;
When it is determined in the broadcast period determination procedure that at least a part of the broadcast period of the specific content is included in the special playback determination period, a control procedure for performing a predetermined process is written. 21. A broadcast signal reproduction apparatus for a television broadcast system according to claim 19 or 20. In the data for data broadcasting, identification information of the specific content is incorporated,
The broadcast signal reproducing apparatus of the television broadcast system according to claim 21, wherein the broadcast period determination procedure is written with reference to the identification information to determine a broadcast period of the specific content.   23. The broadcast signal reproducing apparatus of the television broadcast system according to claim 22, wherein the identification information of the specific content is incorporated as a data broadcast data module or an event message. When a plurality of contents are broadcast as the specific contents in a specific period within the television broadcast program frame, at least the first content broadcast is started until the end of the program frame. The module or event message in which the identification information of the started content is incorporated is transmitted at a predetermined interval, and each time the plurality of contents are broadcast, the identification information of the content that has started broadcasting is the module or event. When it is added to a message sequentially and included,
In the broadcast period determination procedure, it is written that identification information of specific content already broadcast within the program frame is acquired from the module or event message to determine the broadcast period of each content. 24. A broadcast signal reproducing apparatus for a television broadcast system according to claim 23.

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